Colonoscopy is regarded as a relatively safe procedure and is widely performed. However, complications such as bleeding, perforation, and coagulation syndromes can occur during colonoscopy. Although bowel perforation is as rare as 0.4-1.9% of cases, it is the most serious and awful adverse event which can lead to a death. Colon perforation may occur as either intraperitoneal or extraperitoneal, or in combination. Right subdiaphragmatic free air suggests intraperitoneal perforation while pneumoretroperitoneum, pneumomediastinum, pneumopericardium, and subcutaneous emphysema suggest extraperitoneal perforation. Combined intraperitoneal and extraperitoneal perforation is very rare. Herein, we present a case of combined intra-peritoneal and extraperitoneal colon perforation which manifested as pneumoretroperitoneum, pneumomediastinum, pneumopericardium, and subcutaneous emphysema. The lesion was closed with endoscopic clip-ping. (Gut and Liver 2007;1:79-81)
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机译：结肠镜检查被认为是相对安全的程序，被广泛执行。但是，结肠镜检查可能会发生诸如出血，穿孔和凝血综合征等并发症。尽管肠穿孔很少见，占病例的0.4-1.9％，但这是最严重，最可怕的不良事件，可能导致死亡。结肠穿孔可以腹膜内或腹膜外或组合形式发生。右dia下游离空气提示腹膜内穿孔，而气腹，肺纵隔，气腹和皮下气肿则提示腹膜外穿孔。腹膜内和腹膜外穿孔的情况非常罕见。在本文中，我们介绍了一种腹膜内和腹膜外结肠穿孔的病例，表现为气腹，腹膜纵隔，气腹和皮下气肿。用内窥镜钳夹闭合病变。 （Gut and Liver 2007; 1：79-81）
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